From: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>
Date: Wed, 9 Apr 2025 15:41:24 +0000 (+0200)
Subject: gccrs: Emit error with old asm syntax in new asm blocks
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=4894b1e6f2e44afda930322eb4ee487d53242dbc;p=thirdparty%2Fgcc.git

gccrs: Emit error with old asm syntax in new asm blocks

gcc/rust/ChangeLog:

	* expand/rust-macro-builtins-asm.cc (parse_asm_arg): Emit error
	message.

Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>
---

diff --git a/gcc/rust/expand/rust-macro-builtins-asm.cc b/gcc/rust/expand/rust-macro-builtins-asm.cc
index 4d026044776..97f7e3cff77 100644
--- a/gcc/rust/expand/rust-macro-builtins-asm.cc
+++ b/gcc/rust/expand/rust-macro-builtins-asm.cc
@@ -671,6 +671,14 @@ parse_asm_arg (InlineAsmContext inline_asm_ctx)
     {
       token = parser.peek_current_token ();
 
+      if (token->get_id () == COLON || token->get_id () == SCOPE_RESOLUTION)
+	{
+	  rust_error_at (
+	    token->get_locus (),
+	    "the legacy LLVM-style %<asm!%> syntax is no longer supported");
+	  return tl::unexpected<InlineAsmParseError> (COMMITTED);
+	}
+
       // We accept a comma token here.
       if (token->get_id () != COMMA
 	  && inline_asm_ctx.consumed_comma_without_formatted_string)